<!DOCTYPE html>
<html>
<head>
	<title>func的方法</title>
</head>
<body>
	<h2>返回的都是函数的源代码</h2>
	<script>
		function doAdd(iNum){
			alert(iNum+10);

		}
		document.write(doAdd.toString());
	</script>

</body>
</html>